Produce an Orthomosaic X feet above ground level? How Two?

[jazzyj]

Subject line may not be the best description of what I'm trying to do.

Basically I want to take a 3D model of a group of buildings and either remove all points above a certain elevation, or preferably take a 'slice' buy eliminating all points above and below a certain min and max elevation.  I know I would be left with no images of the tops of the buildings.  Essentially what is going on is many buildings have large roof overhangs or ground features (doorsteps, etc).  I want to estimate the dimensions of the buildings taken like 5 feet off the ground to effectively disregard the roof overhangs and the protruding features from the ground up to 5 feet.

Is this something I can do in Photoscan, or do I essentially need to bring the entire point cloud into a CAD system and perform the "slicing" there?

[Alexey Pasumansky]

Hello jazzyj,

I can suggest to shrink the bounding box in the vertical direction to the area of interest, thus the outside mesh areas would be ignored during the orthomosaic generation.  Also it may be reasonable in this case you enable "back-face culling option".